Central processing unit for electronic filing system



FIG. 1 is a front elevational view of the central processing unit for electronic filing system showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view, the left side elevational view being a mirror image thereof; and

FIG. 6 is a top, front, right side perspective view thereof on an enlarged scale. 

The ornamental design for a central processing unit for electronic filing system, as shown and described. 